Double-power rapid automatic switching device

A double-power rapid automatic switching device comprises a power network and a generating set, and is characterized in that semiconductor power valves are respectively connected between the power network and a load bus and between a generator bus and the load bus; each semiconductor power valve adopts a non-return electronic power switch and a component combined with a contactor; the generating set is controlled by a generating set control system; and the generating set control system mainly consists of 4 unit, namely, a measuring mechanism, a speed regulating system, an excitation regulation system and a generating set integrated control module. The device uses a diesel generating set as a backup source, adopts the combination of the semiconductor power valve and the generating set control mechanism, and achieves quasi-instantaneous non disturbance double-power rapid automatic switch.